Mounting for flyer blocks



Sept. 15, 1931. G. w. EVANS MOUNTING. FOR F'LYER BLOCKS Filed Nov. 18, 1929 Patented Sept. 15, 1 931" iJNi ED STATESPATENT OFFICE GEORGE WILLIAM EVANS OIE WlILKES-BARRE, PENNSYLVANIA MOUNTING FOR "rLYEn BLOCKS Application filed November 18, 1929. Serial No. 408,078.

. This invention relates to improvements in flyers for spinning machines, and has in view to provide a novel combination of features in the construction and mounting of afiyer block intended to provide an adequate remedy corv recting certain defects inherent to flyer blocks as at present generally constructedand used.

According to present practiceflyer blocks usually are retained on the bobbin spindles by means of buttons frictionally engaged with the bobbin spindles, butdue to wear 1 on the buttons and bobbin spindles after long use, and to the practical impossibilityof constructing the buttons and the bobbin spindles with sufficient accuracy so that each button will fit in the same manner as another on each bobbin spindle, it frequently happens that a flyer block will not be allowedsufficient play or will be allowed too muchplay, by its retaining. button and by the position of the bobbin on the spindle to operatev properly. Moreover, the retaining buttons may, and quite frequently ,do,,fly oif from the bobbin spindles, releasing the flyer blocks which themselves quite frequently flyl ofi,

causing breakage of the thread and loss in.

time and material in effecting the necessary repairs.

The present invention, tlierefore,.has in View the provision of a flyer block and means for mounting same in operative relation to a bobbin and a bobbin spindle, whereby the aforementioned disadvantages,v at a present generally experienced may effectively be overcome, the present flyer block being positively retained in assembly with the bobbin when the latter is mounted on a spindle and, irrespective of wear on'the spindle or the bobbin, having at all times substantially the same amount of looseness or playlongitudinally with respect to the spindle, so that an if even tension on the thread is maintained.

Thus, the present flyer block construction and mounting is designed to eliminate machine stoppages due to loss of flyer blocksandlto thread breakages resultingfrom uneven tensioning of same; to reduce flyer block costs;

to enable increased production by the employment of minimum labor, dueto the present flyer blocks requiring only minimum at- :the' accompanying drawings and defined in the appended claims.

In. the drawings, wherein like characters of reference denote corresponding parts in the different views Fig. 1 is aview in side elevation illustrating the present flyer block mounted in operative relation toa bobbin and a bobbin spindle. I Y

Fig. 2 is a top plan view of the structure shown in Fig. 1.-

. Fig. 3 is an enlarged sectional view on the line 8.3 of Fig. 1 showing in detail the manner of connecting the flyer bloclr with the bobbin.

Fig. at is a view similar to Fig. 3 showing the manner of engaging and disengaging the. flyer block with and from the bobbin; and

Fig. 5 is a detail perspective view of the flyer block mounting tube.

.Referringto the drawings in detail, A designates a bobbin, B a spindle on which said bobbin is adapted to be engaged in the usual manner for rotation thereby, and C the present flyer block.

In accordancewith the invention, the usual screw retained flange'lO at the upper end of the bobbin A is provided with a relatively large central hole in which is secured. by: a

forced fit or in other suitable manner, a

sleeve-11 provided at its outer end with an inturned flange 12. Thus, a recess 13 is provided between the flange 12 and the end of the bobbin, and within this recessis disposed a coil spring 14 which holds a ring 15, movable longitudinally within the sleeve 11, normally in engagement with the inner face of the 1 inturned flange 12 of said sleeve.

The present flyer blockC carries, in any suitable manner, the usual arms 16 of wire or other material, having the loops or eyes 17 at their ends through which the strands from the bobbin are adapted to be threaded for twistingor spinning in the usual well known manner. This flyer block, in accordance with the present invention, is mounted loosely on a tube 18 for free rotation with re-' spect thereto, the inner end of said tube having opposite and outwardly extending lateral flanges 19, 19 liiniting movement of the the sleeve 11 and the ring 15, whereby the 7 end of the flanges19of the tube 18.

flyer block is maintained effectively in assem bly with the bobbin A, for quick'and easy detachment therefrom," when the bobbin is removed from the spindle B. In this respect 'it will be noted that the diameter of the hole formed by the inturned flange 12 of the sleeve 11 is less than the length from 8nd to onsequently, to assernb-lethe tube 18 with the bobbin, it is necessary to tilt the tube with respect to the bobbin as illustrated in Fig. 4, engage one of the'flanges 19 against the rin 15 )ress inwardl a ainst said rin and D 7 c b b at the same time shift the tube laterally to engage said flange 19 beneath the flange 12, and

then rock the tube into axial alinement with the bobbin and shift same laterally in an op posite direction to engage the other flange. 19 beneath the flange 12.

eration and may be readily accomplished, xwhereafter the spring against the ring 15 forces the latter against 14 by its pressure the iner flat faces of the flanges 19 and thus flmaintains the outer faces of the latter enthe flyer block gaged against the flange 12 and the tube with thereon in assembly with the bobbin against disengagement therefrom b bination of movements just recited.

With the tube 18 assembled with the bobbin in the manner stated, it is apparent that when the bobbin is engaged over the spindle B, as

shown in Figs. 1, 2 and 3, the spindle passing upwardly through the tube 18 will maintain same centered with respect to the bobbin so that any tilting movement of the tube essential' to effect its disengagement from the bobbin is positively prevented. It is apparent therefore that by reason of cut construction the flyer block cannot accidentally fly off during use, nor can it acci-' dentally be disengaged from the bobbin invention and This is a simple opthe pres'-- mains constant irrespective of wear which may permit the bobbin to be moved a greater 'or less distance onto the spindle B.

- Without further description it is thought that the features and advantages of the inven tion will be readily apparent to those skilled in the art, and it will of course be understood that changes in the form, proportion and minor details of construction may be resorted to, without departing from the spirit of the scope of the appended claims.

I claim: 1

1. In combination witha bobbin having a recess and an annular flange extending into said recess, a tube provided with lateral flanges engageable behind'the flange of said bobbin, spring means within said recess 7 pressing the flanges of said tube against said bobbin flange, and a flyer block carried by said tube.

2. In combination with a bobbin having an opening surrounded by a flange, atube ha ving oppositely directed lateral flanges of atotal length from end to end greater than the diameter of said opening, insertable throughthelatter and engageable behind said first mentioned flange by tilting movement of said tube with respect to said bobbin, and 'a flyer blockrotatably mounted on said tube.

3. A flyer device comprising the combination with the bobbin having'a'flange projecting inwardly therefrom, of a tubular memher having a laterally projecting flange at one end'for engaging beneath the flange of the bobbin, said tubular member also having a shank portion of uniform diameter throughout, a flyer blockmounted for free rotation on the said shank of the tubular member, and locking means on the end of the shank spaced from the top of the flyer block whereby the said flyer block may have a y movement longitudinally of the shank as; any movement except a reversal of the com- 1 projecting inwardly from the bobbin and a companion flange projecting outwardly from;

the flyer, the two flanges being held in given position by means of the spindle, and said flyer including a tubular shank portion extendingaway from said companion flange, a flyer block mounted on said tubular shank: portion, and a locking ring detachably engaging the'end of the tubular shank opposite said companion flange.

5. In combination with a bobbin having an openingsurroun-ded by a flange, a flyer block device including a tubular portion having oppositely directed ofiset portions of a total length from end to end greater than the diameter of said opening and insertable through the latter to be engaged behind said flange by a tilting movement of said .flyer device with respect to said bobbin.

6. The combination with a bobbin and the spindle passing through an opening in the bobbin, said bobbin having a recess surrounding said opening, a flange surrounding the recess and providing a flyer block recelving opening, a flyer block device including a tubular portion provided at its lower end with opposite projections of a total length from end to end greater than the diameter of said opening formed by the flange, whereby the flyer block may be inserted behind the said flange by a tilting movement with respect to the bobbin, and the spindle will center and lock the flyer block within said flange.

In testimony whereof I hereunto aflix my signature.

GEORGE WILLIAM EVANS. 

